Fix case handling in Instant suggestions.

chrome/browser/instant/instant_browsertest.cc

Index: chrome/browser/instant/instant_browsertest.cc
diff --git a/chrome/browser/instant/instant_browsertest.cc b/chrome/browser/instant/instant_browsertest.cc
index 849904dfd9417f565156707deea51e965b0a955b..94478ea9595900a3b75ae66c46b14b939b625eaa 100644
--- a/chrome/browser/instant/instant_browsertest.cc
+++ b/chrome/browser/instant/instant_browsertest.cc
@@ -79,7 +79,7 @@ class InstantTest : public InProcessBrowserTest {
 
   void SetOmniboxText(const std::string& text) {
     FocusOmnibox();
-    omnibox()->SetUserText(ASCIIToUTF16(text));
+    omnibox()->SetUserText(UTF8ToUTF16(text));
   }
 
   void SetOmniboxTextAndWaitForInstantToShow(const std::string& text) {
@@ -129,7 +129,7 @@ class InstantTest : public InProcessBrowserTest {
   bool ExecuteScript(const std::string& script) WARN_UNUSED_RESULT {
     return content::ExecuteJavaScript(
         instant()->GetPreviewContents()->web_contents()->GetRenderViewHost(),
-        std::wstring(), ASCIIToWide(script));
+        std::wstring(), UTF8ToWide(script));
   }
 
   bool CheckVisibilityIs(TabContents* tab, bool expected) WARN_UNUSED_RESULT {
@@ -867,3 +867,49 @@ IN_PROC_BROWSER_TEST_F(InstantTest, InstantLoaderRefresh) {
   instant()->OnAutocompleteLostFocus(NULL);
   EXPECT_FALSE(instant()->loader()->supports_instant());
 }
+
+// Test that suggestions are case insensitive. http://crbug.com/150728
+IN_PROC_BROWSER_TEST_F(InstantTest, SuggestionsAreCaseInsensitive) {
+  ASSERT_NO_FATAL_FAILURE(SetupInstant("instant.html"));
+  FocusOmniboxAndWaitForInstantSupport();
+
+  EXPECT_TRUE(ExecuteScript("suggestion = [ { value: 'INSTANT' } ]"));
+
+  SetOmniboxTextAndWaitForInstantToShow("in");
+  EXPECT_EQ(ASCIIToUTF16("instant"), omnibox()->GetText());
+
+  instant()->Hide();
+  SetOmniboxTextAndWaitForInstantToShow("IN");
+  EXPECT_EQ(ASCIIToUTF16("INSTANT"), omnibox()->GetText());
+
+  // U+0130 == LATIN CAPITAL LETTER I WITH DOT ABOVE
+  EXPECT_TRUE(ExecuteScript("suggestion = [ { value: '\\u0130NSTANT' } ]"));
+
+  instant()->Hide();
+  SetOmniboxTextAndWaitForInstantToShow("i");
+  EXPECT_EQ(WideToUTF16(L"i\u0307nstant"), omnibox()->GetText());
+
+  instant()->Hide();
+  SetOmniboxTextAndWaitForInstantToShow("I");
+  EXPECT_EQ(WideToUTF16(L"I\u0307nstant"), omnibox()->GetText());
+
+  instant()->Hide();
+  SetOmniboxTextAndWaitForInstantToShow(WideToUTF8(L"i\u0307"));
+  EXPECT_EQ(WideToUTF16(L"i\u0307nstant"), omnibox()->GetText());
+
+  instant()->Hide();
+  SetOmniboxTextAndWaitForInstantToShow(WideToUTF8(L"I\u0307"));
+  EXPECT_EQ(WideToUTF16(L"I\u0307nstant"), omnibox()->GetText());
+
+  instant()->Hide();
+  SetOmniboxTextAndWaitForInstantToShow(WideToUTF8(L"\u0130"));
+  EXPECT_EQ(WideToUTF16(L"\u0130NSTANT"), omnibox()->GetText());
+
+  instant()->Hide();
+  SetOmniboxTextAndWaitForInstantToShow("in");
+  EXPECT_EQ(ASCIIToUTF16("in"), omnibox()->GetText());
+
+  instant()->Hide();
+  SetOmniboxTextAndWaitForInstantToShow("IN");
+  EXPECT_EQ(ASCIIToUTF16("IN"), omnibox()->GetText());
+}